Molded Case Circuit Breaker (Mccb)" Control Function - Siemens SIMOCODE pro System Manual

4.2.6

"Molded case circuit breaker (MCCB)" control function

Description
SIMOCODE pro can mainly switch circuit breakers (e.g. 3WL, 3VL) ON and
OFF with this control function. The circuit breakers are connected to
PROFIBUS DP via SIMOCODE pro.
Control commands
• Start with "ON >" activates the QE1 contactor control for a pulse of 400 ms.
• Stop with "OFF" activates the QE3 contactor control for a pulse of 400 ms.
• With "Reset", the QE3 contactor control is activated for a pulse of 400 ms
when the circuit breaker is tripped (alarm switch = ON).
The pulse of a control command is always fully executed before the "counter
pulse" is set.
The control commands can be issued to SIMOCODE pro from arbitrary
control stations (see also the description of "control stations"). Thus, the
inputs (plugs) must be connected to the corresponding sockets, preferably
to the "Enabled control command" sockets.
Making internal assignments
You have to make the following assignments:
1) Assign the QE1 contactor control to the relay output that is connected to the
"ON Connection" of the motor drive of the circuit breaker.
2) Assign the QE3 contactor control to the relay output that is connected to the
"OFF Connection" of the motor drive of the circuit breaker.
3) Assign the SIMOCODE pro input which is connected to the auxiliary switch
(AS) of the circuit breaker to the auxiliary control input "Feedback ON".
4) Assign the SIMOCODE pro input which is connected to the alarm switch (AS)
of the circuit breaker to the input (socket) of the "External fault 1" standard
function.
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
Motor control
4-27